Four side seal bags adopt a full-perimeter sealing process, offering superior sealing strength compared to traditional bag types. Their moisture resistance, leakproofness, and freshness retention are more prominent, making them especially suitable for products with high storage environment requirements. The flat bag surface provides ample space for printing, clearly showcasing brand logos, product information, and exquisite patterns to enhance packaging quality. Whether for dried goods, health supplements, pet food, or洗护 samples, four-side sealed bags extend shelf life through tight protection, standing out as a preferred option that balances protective performance and aesthetics.